(Picture of female. Attempt to disguise some copied text. Distribution, Taxonomy. References.) |
(Picture of nominate. References updated) |
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| − | [[Image:Yellow-faced | + | [[Image:Yellow-faced-Grassquit-4V0A5325-Punta-Cana.jpg|thumb|550px|right|Male, nominate subspecies<br />Photo by {{user|fishercl|fishercl}}<br />Punta Cana, [[Dominican Republic]], May 2011]] |
;[[:Category:Tiaris|Tiaris]] olivaceus | ;[[:Category:Tiaris|Tiaris]] olivaceus | ||
==Identification== | ==Identification== | ||
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*Bright yellow throat, [[Topography#Heads|supercilium]], and lower eyelid spot | *Bright yellow throat, [[Topography#Heads|supercilium]], and lower eyelid spot | ||
*Greyish-olive underparts<br /> | *Greyish-olive underparts<br /> | ||
| + | [[Image:Yellow-faced_Grassquitcb.jpg|thumb|350px|right|Subspecies ''pusillus''<br />Photo by {{user|COLOMBIA+Birding|COLOMBIA birding}}<br />West Andes, [[Colombia]], November 2010]] | ||
'''Adult female''' | '''Adult female''' | ||
*Dull olive-green upperparts | *Dull olive-green upperparts | ||
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'''Young males''': begin to acquire full adult plumage in their first year. | '''Young males''': begin to acquire full adult plumage in their first year. | ||
==Distribution== | ==Distribution== | ||
| − | |||
[[Central America|Central]] and [[South America]] and the [[Caribbean]]<br /> | [[Central America|Central]] and [[South America]] and the [[Caribbean]]<br /> | ||
'''Central America''': [[Mexico]], [[Guatemala]], [[El Salvador]], [[Honduras]], [[Nicaragua]], [[Costa Rica]], [[Panama]], uas | '''Central America''': [[Mexico]], [[Guatemala]], [[El Salvador]], [[Honduras]], [[Nicaragua]], [[Costa Rica]], [[Panama]], uas | ||
'''Caribbean (West Indies)''': [[Greater Antilles]], [[Cuba]], [[Cayman Islands]], [[Jamaica]], [[Hispaniola]], [[Haiti]], [[Dominican Republic]] and [[Puerto Rico]]<br > | '''Caribbean (West Indies)''': [[Greater Antilles]], [[Cuba]], [[Cayman Islands]], [[Jamaica]], [[Hispaniola]], [[Haiti]], [[Dominican Republic]] and [[Puerto Rico]]<br > | ||
'''South America''': [[Colombia]], [[Venezuela]] and [[Ecuador]] | '''South America''': [[Colombia]], [[Venezuela]] and [[Ecuador]] | ||
| + | [[Image:Yellow-faced Grassquit female.jpg|thumb|350px|right|Female, Subspecies ''pusillus''<br />Photo by | ||
| + | {{user|Stanley+Jones|Stanley Jones}}<br />Road to Rincon de la Vieja towards Dos Rios, Guanacaste Province, [[Costa Rica]], November 2011]] | ||
==Taxonomy== | ==Taxonomy== | ||
====Subspecies==== | ====Subspecies==== | ||
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*''T. o. intermedius'': | *''T. o. intermedius'': | ||
:*Cozumel Island and Holbox Island (off Yucatan Peninsula) | :*Cozumel Island and Holbox Island (off Yucatan Peninsula) | ||
| − | [[Image:Yellow-faced | + | [[Image:Yellow-faced Grasquit Costa Rica .jpg|thumb|300px|right|Male, Subspecies ''pusillus''<br />Photo by by {{user|Stanley+Jones|Stanley Jones}} <br />[[Alajuela Province]], [[Costa Rica]], March, 2006]] |
| − | {{user|Stanley+Jones|Stanley Jones}}<br /> | ||
*''T. o. ravidus'': | *''T. o. ravidus'': | ||
:*Isla Coiba ([[Panama]]) | :*Isla Coiba ([[Panama]]) | ||
| Line 50: | Line 51: | ||
The male vibrates his wings as he sings to the female from only a few centimetres away. | The male vibrates his wings as he sings to the female from only a few centimetres away. | ||
==References== | ==References== | ||
| − | #{{Ref- | + | #{{Ref-Clements6thAug15}}#Avibase |
#everything.explained | #everything.explained | ||
{{ref}} | {{ref}} | ||
Revision as of 20:50, 7 October 2015
- Tiaris olivaceus
Identification
Length: 10.0-10.7 cm; weight: 9.5-10.0 g
- Conical bill, sharper than that of the related seedeaters
Adult male
- Olive-green back
- Black face and breast
- Bright yellow throat, supercilium, and lower eyelid spot
- Greyish-olive underparts
Adult female
- Dull olive-green upperparts
- Paler grey underparts
- Dark breast smudges may be visible
- The face pattern is much weaker and duller, and may be almost invisible
Young birds: duller and greyer than the female
Young males: begin to acquire full adult plumage in their first year.
Distribution
Central and South America and the Caribbean
Central America: Mexico, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, Panama, uas
Caribbean (West Indies): Greater Antilles, Cuba, Cayman Islands, Jamaica, Hispaniola, Haiti, Dominican Republic and Puerto Rico
South America: Colombia, Venezuela and Ecuador
Female, Subspecies pusillus
Photo by Stanley Jones
Road to Rincon de la Vieja towards Dos Rios, Guanacaste Province, Costa Rica, November 2011
Photo by Stanley Jones
Road to Rincon de la Vieja towards Dos Rios, Guanacaste Province, Costa Rica, November 2011
Taxonomy
Subspecies
There are 5 subspecies[1]:
- T. o. pusillus:
- T. o. intermedius:
- Cozumel Island and Holbox Island (off Yucatan Peninsula)
- T. o. ravidus:
- Isla Coiba (Panama)
- T. o. olivaceus:
- T. o. bryanti:
The scientific name has been spelled olivacea in the past.
Habitat
Rain forest, open grassy areas, woodlands and grassland. Observed at heights around 275 meters.
Behaviour
Diet
They feed mainly on seeds (mostly grass), berries and some insects.
Breeding
The female builds the globular nest, which is formed from stems of grass and weeds. They sometimes nest in loose colonies. The clutch consists of two or three brown-speckled white eggs, which are incubated by the female alone for 12-14 days to hatching.
Vocalisation
Call: a weak buzzing trilled ttttt-tee
The male vibrates his wings as he sings to the female from only a few centimetres away.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Avibase
- everything.explained
Recommended Citation
- BirdForum Opus contributors. (2024) Yellow-faced Grassquit. In: BirdForum, the forum for wild birds and birding. Retrieved 25 April 2024 from https://www.birdforum.net/opus/Yellow-faced_Grassquit
